Speaker
Francesco Alessio
(Nordita)
Description
I will discuss different aspects and approaches to the Kerr binary problem using scattering amplitudes techniques. In particular, I will start by showing the construction of a Lagrangian relevant to describe Kerr binaries, deriving expressions for the classical amplitude for the elastic 2—>2 process at 1PM and 2PM. I will then consider radiation reaction effects and their connection to the imaginary part of the 3PM spinning eikonal phase. Eventually, I will mention partial new results for the Compton amplitude involving spinning objects coming from string theory.
